Installing Features using pom Files

Prerequisites

Maven3 and Ant needs to be installed.

Steps

The following are the steps for creating a new feature installed distribution:

1. Create a directory and copy the pom.xml file given below.

   This example provides a sample pom.xml file to create a new feature installed distribution, which uses the default profile (<profile>default</profile>) and the corresponding directory path (dir="<PRODUCT_NAME>/repository/components/default/configuration/org.eclipse.equinox.simpleconfigurator">).

   You need to update the following values:

   • The name of your product should replace <PRODUCT_HOME> (e.g., ESB-4.8.1).
   • The relevant profile (e.g., default) should replace $profile. Read more about profiles from here.

   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   	<modelVersion>4.0.0</modelVersion>
   	<groupId>org.wso2.sample</groupId>
   	<artifactId>sample-feature-installation</artifactId>
   	<version>1.0.0</version>
   	<packaging>pom</packaging>
   	<name>Creating custom distribution</name>
   	<url>http://wso2.org</url>
   	<build>
   		<plugins>
   			<plugin>
   				<groupId>org.wso2.maven</groupId>
   				<artifactId>carbon-p2-plugin</artifactId>
   				<version>1.5.3</version>
   				<executions>
   					<execution>
   						<id>feature-install</id>
   						<phase>package</phase>
   						<goals>
   							<goal>p2-profile-gen</goal>
   						</goals>
   						<configuration>
   							<profile>default</profile>
   							<metadataRepository>file:p2-repo</metadataRepository>
   							<artifactRepository>file:p2-repo</artifactRepository>
   							<destination>$distribution_name/repository/components</destination>
   							<deleteOldProfileFiles>true</deleteOldProfileFiles>
   							<features>
   								<feature>
   									<id>org.wso2.carbon.tryit.feature.group</id>
   									<version>4.2.0</version>
   								</feature>
   							</features>
   						</configuration>
   					</execution>
   				</executions>
   			</plugin>
   			<plugin>
   				<groupId>org.apache.maven.plugins</groupId>
   				<artifactId>maven-antrun-plugin</artifactId>
   				<version>1.1</version>
   				<executions>
   					<execution>
   						<phase>package</phase>
   						<configuration>
   							<tasks>
   								<replace token="false" value="true" dir="<PRODUCT_NAME>/repository/components/default/configuration/org.eclipse.equinox.simpleconfigurator">
   									<include name="**/bundles.info"/>
   								</replace>
   							</tasks>
   						</configuration>
   						<goals>
   							<goal>run</goal>
   						</goals>
   					</execution>
   				</executions>
   			</plugin>
   		</plugins>
   	</build>
   	<repositories>
   		<repository>
   			<id>wso2-nexus</id>
   			<name>WSO2 internal Repository</name>
   			<url>http://maven.wso2.org/nexus/content/groups/wso2-public/</url>
   			<releases>
   				<enabled>true</enabled>
   				<updatePolicy>daily</updatePolicy>
   				<checksumPolicy>ignore</checksumPolicy>
   			</releases>
   		</repository>
   	</repositories>
   	<pluginRepositories>
   		<pluginRepository>
   			<id>wso2-maven2-repository</id>
   			<url>http://dist.wso2.org/maven2</url>
   		</pluginRepository>
   		<pluginRepository>
   			<id>wso2-maven2-snapshot-repository</id>
   			<url>http://dist.wso2.org/snapshots/maven2</url>
   		</pluginRepository>
   	</pluginRepositories>
   </project>

   Read more about the following plugins:

   • maven-antrun-plugin
     
   • Carbon P2 plugin
2. Unzip p2-repo.zip (from http://dist2.wso2.org/p2-zip/carbon/releases/<carbon-version>/ directory) into a folder named p2-repo, which is in the same location as the product distribution. 
3. Replace the $distribution_name params found in the pom.xml file, with the unzipped product distribution name (e.g., wso2carbon-<version>) 

4. In the pom.xml file, list down the features you want to install into the system. Example:
   

    <feature> 
      <id>org.wso2.carbon.tryit.feature.group</id> 
      <version>4.2.0</version> 
   </feature>

5. Execute the following command:
   

   mvn clean install

   Upon successful invocation of the build, the product distribution is provisioned with the new features. This approach is scriptable.